Preparation method of water-resistant anti-seismic gypsum-based self-leveling material

A self-leveling, gypsum-based technology, applied in the field of self-leveling materials, can solve the problems of high-strength gypsum, high price and difficult operation, and achieve the effects of improving seismic performance, increasing compactness, increasing strength and durability

Active Publication Date: 2020-11-20
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The price of high-strength gypsum used in this method is relatively high, and there are many types of admixtures added, which is not easy to operate

Method used

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  • Preparation method of water-resistant anti-seismic gypsum-based self-leveling material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) In parts by weight: 100 parts of anhydrous phosphogypsum, 10 parts of silica fume, 20 parts of modified ultrafine steel slag, and 1 part of straw powder nanocrystals were mixed and stirred for 10 minutes to obtain solid mixture A;

[0030] 2) Take by weight: 0.1 part of defoamer, 0.4 part of water reducer, 0.2 part of water retaining agent, 6 parts of composite activator, 70 parts of water, stir for 10 minutes, and mix well to obtain liquid mixture B;

[0031] 3) Mixing and stirring the solid mixture and the liquid mixture obtained in step 1) and step 2) to obtain a gypsum-based self-leveling material.

Embodiment 2

[0033] 1) Taken in parts by weight: 102 parts of anhydrous phosphogypsum, 11 parts of silica fume, 21 parts of modified ultrafine steel slag, and 2 parts of straw powder nanocrystals were mixed and stirred for 11 minutes to obtain solid mixture A;

[0034] 2) Take by weight: 0.2 part of defoamer, 0.5 part of water reducer, 0.3 part of water retaining agent, 7 parts of activator, 70 parts of water, stir for 11 minutes, and mix well to obtain liquid mixture B;

[0035] 3) Mixing and stirring the solid mixture and the liquid mixture obtained in step 1) and step 2) to obtain a gypsum-based self-leveling material.

Embodiment 3

[0037] 1) Taken in parts by weight: 103 parts of anhydrous phosphogypsum, 12 parts of silica fume, 22 parts of modified ultrafine steel slag, and 3 parts of straw powder nanocrystals were mixed and stirred for 12 minutes to obtain solid mixture A;

[0038] 2) Take by weight: 0.3 part of defoamer, 0.6 part of water reducer, 0.4 part of water retaining agent, 8 parts of composite activator, 70 parts of water, stir for 12 minutes, mix well, and obtain liquid mixture B;

[0039] 3) Mixing and stirring the solid mixture and the liquid mixture obtained in step 1) and step 2) to obtain anhydrous gypsum-based ground self-leveling material.

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Abstract

The invention provides a preparation method of a water-resistant anti-seismic gypsum-based self-leveling material. The preparation method comprises the following steps: mixing and stirring 100-120 parts by weight of anhydrous phosphogypsum, 10-15 parts by weight of silica fume, 20-30 parts by weight of modified ultrafine steel slag and 1-5 parts by weight of straw powder nano crystals for 10-20 minutes to obtain a solid mixture A; step 2, taking 0.1-0.5 part by weight of a defoaming agent, 0.4-0.8 part by weight of a water reducing agent, 0.2-0.6 part by weight of a water retaining agent, 6-8parts by weight of a composite excitant and 70 parts by weight of water, stirring for 10-20 minutes, and uniformly mixing to obtain a liquid mixture B; and step 3, mixing and stirring the solid mixture A and the liquid mixture B obtained in the step 1 and the step 2 for 5-10 minutes to obtain the anti-seismic gypsum-based self-leveling material. According to the method, the gypsum-based self-leveling material prepared by a specific construction process has good flowability, stability, high strength and high shock resistance.

Description

technical field [0001] The invention belongs to the technical field of self-leveling materials, and in particular relates to a preparation method of a water-resistant and shock-resistant gypsum-based self-leveling material. Background technique [0002] Gypsum-based self-leveling material is a new type of ground material. The gypsum self-leveling material has good fluidity and stability during the construction process, and there will be no adverse phenomena such as segregation, delamination and bleeding before setting and hardening. At the same time, the surface layer is thin, the construction speed is fast, the surface is smooth and smooth, and the water and acid resistance is good. Gypsum-based self-leveling materials are mainly based on gypsum, mixed with aggregates, mineral admixtures, water reducers, retarders, defoamers and pigments. Gypsum-based materials also have good thermal insulation and sound insulation properties. The porous structure of gypsum materials make...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/16C04B111/27C04B111/60
CPCC04B28/16C04B2201/50C04B2201/10C04B2111/60C04B2111/27C04B18/146C04B18/142C04B18/24C04B24/003C04B24/42C04B24/26C04B24/38C04B24/383C04B22/147C04B22/064C04B2103/302
Inventor 苏英黄震宇付泽康叶坤李玉博刘巧熊国庆陈顺贺行洋李颜娟曹奕鸣
Owner HUBEI UNIV OF TECH
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